Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a23793d0cc8f8e8…

MALICIOUS

PDF

87.9 KB Created: 2021-03-12 13:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a3bdef2db6fd4fba2dbf2b5c72db784f SHA-1: c999d87eda1a9d81ff8e8154cfb12923ef61c0bf SHA-256: 2a23793d0cc8f8e82809913acbb8d05db1ba7dc32f0428e600ccb94594f37ef2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains an embedded external URI pointing to a suspicious domain, which is a strong indicator of phishing or malware distribution. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/strik?utm_term=insinkerator+444+lowe%2527s PDF link annotation
    • https://lulotabo.weebly.com/uploads/1/3/4/7/134745182/1b62e29e36fe.pdfIn PDF document text
    • https://cdn.sqhk.co/solalokazili/Cgdhhjf/cartoon_wars_gunner_mod_apklover.pdfIn PDF document text
    • https://fugebigejajifad.weebly.com/uploads/1/3/1/4/131406613/7227216.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/hdifgeP/sanofajewokivon.pdfIn PDF document text
    • http://meleworofazob.22web.org/3702284711.pdfIn PDF document text
    • https://safuziketuxoxu.weebly.com/uploads/1/3/0/8/130814855/potazefewegiwovo.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/gfYUrii/pixel_car_racer_gtr_r34_tune.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mezasijov.epizy.com/niwolifinoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09073762-b286-4205-a622-a2ff9ba56cca/what_games_can_i_play_with_ipega_controller.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/autodesk_alias_autostudio_2018_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/love_test_calculator_game.pdfIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_73261061420a4b7fb56e6c00f00e40c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/lozokaxekapitifobisikimot.pdfIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_6d40bf85d0bf461c9324c8ce9a2c5bd2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cedd32e6-a7f6-4772-8363-83a12c5eb384/lyrics_ed_castle_on_the_hill.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/goruve.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82218531-3363-4cf9-a870-ba1081f120a0/el_evangelio_prohibido_de_felipe.pdfIn PDF document text
    • http://bawatusarab.epizy.com/asge_guidelines_pregnancy.pdfIn PDF document text
    • http://dupumimegijema.epizy.com/acgih_tlv_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/482d1ae3-b54e-444a-9efe-5110bc792ce9/20769518388.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9cf44b03-42fe-4acd-ac38-5774aa31725b/fikaketesasokavijunavase.pdfIn PDF document text
    • https://1682489e-d94b-4f22-b6a6-c8ecb623ca2e.filesusr.com/ugd/5f226e_60568009595c48259492dd2b9eb15bb7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/77688212877.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A35 4896 bytes
SHA-256: a4323569774229b8e1d6ae22ad56f0578d7148cf396d7b10969bdac665df6bb3
font_01_sfnt_off00012b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B09 11836 bytes
SHA-256: 2aa2aede6d60c064c5583e762a271cf78e96f515afbc8ce046465096b8cc86eb

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